sudo apt-get update && sudo apt-get dist-upgrade
Hit:1 http://mirrors.digitalocean.com/ubuntu xenial InRelease
Hit:2 http://mirrors.digitalocean.com/ubuntu xenial-updates InRelease
Hit:3 http://security.ubuntu.com/ubuntu xenial-security InRelease
Reading package lists... Done
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these.
The following packages have unmet dependencies:
E: Unmet dependencies. Try using -f.